Tenoning machine



March 3, 1931. ss 1,794,859

' TENONING MACHINE Filed Feb. 20, 1928 INVENTOR. 1 our 5 M A S 5 11 BY fi ATTORNEY.

. Patented Mar. 3, 1931 PAT V noUIs MA ss,,-or nARrroimconnEor oUr TENONI'NG MACHINE I Application filed'February 20; 1928. sual m. 255374? My invention'relates to'machinery'whioh serves to .mill 'tenons onto lumber boards, and in particular to light tenoning machines whichware used by cabinet makers, furniture I '5 manufacturers 'et-ci, and" the objects of my invention'arer j r- 1st, to enhance the ,Ve'rsatilityof atenoner; "2nd, to make atenoning machine simplein construction and handling forunskilledopg erators r i 3rd,.to eliminate, mechanical transmissions 4th, to-limit the dangerous revolving parts to the working-parts themselves;

' 5th, toreserve the table topfor thesaw cut- =tingthetop of the tenon only;

6th, to save power;

' 7th, to avoid partswhiclr are-apt to be im-f pairedbyrdirt and" dust; 1 8th, toprovide a machine which adapted for'doubletenonin'g; I

9th, to allow free. alignmentof topf'and botcan be- -tom saws relative to each other as well as to V Figure 2is a side View of my invention, and

' Figure 3 shows a front elevation of a por- 'tion' of my improvement.

Similar numerals refer to similar parts *th'ruout the several views.

(3n top of and below the four-legged table 4 are fulorumed in bearings 5 and 6 the levers 7 and 8 respectively. At their free ends these levers are forked and carry, rotatively suspended between pivot-screws 9, '9 respectively, the lugs 10 and 11 respectively.

Extending from one end of the table, and below the table top, I provide-brackets'15 and 16, within which auxiliary lugs 11 and 10*,

respectively are 'pivotally mounted ,on sup Porting s"9"-"and 9' respectively; The

lfor the rotary saws 20 on motor 17 au-Xili lug v' 10 is below and in sub stantial-- ,ly vertical. alignment with-the-luglO in, the

free end of the lever 7,. andthe auxiliarylug' 11 is above and in substantially vertical alignment with the lug-"11,, in the free-rend ofthe lever 8. These auxiliary lugs 11 and" 10 are provided with screw receivingopenings 10 and 11,the openingin :theluglO I being threaded. l v e v -Lug- 11 is tappedto takethe-threaded part 0 of adjustment screw 1263 The" upper unthreaded end of that screw is providedwith a flange 13 and, ;at the end, with knurled I handle "14 and it is'rotat'a-bly fitted" uponthe lug'llf which isrotatably suspended, bypiv; 5 i 'ot-screws-'9 betweenbrackets 15-below the I tableear-Operation of handle 14 will therefore positively move-the free end of the lever z-8'towards or'away" from -the table 1. Correspondingly lever 7 ismoved up and down by parts 14, 13, 12, 10 and 10, similar-to those parts above referred to, the lug 1O" being rotatilvelysuspended; by pivotscrews 9 be-- tweenbraokets 16 below the edge oftable 4.

' High-speed motor 17 -is';.by meansof screws '18, assembled in',"andt forms part "of, lever 8.

on. the spindle? ofthat motor is solidly mounted a flange notishown, but similar-to the flange 19 on the spindle of the motor 23 against whichfiange are replaceablyfastened the saws20,'by flanged collar 21 andnut 22 on the endfof the spindle;

'The spindle of another motor 23 carries similar parts19 20; '21 and'22t. The two electric motors are of the ball-bearing type, or in some'other way the end-play of the spindles is eliminated. Dovetails 24 form part ofthe housing ofjmotor23and fit the slide 25 (with gib 26) which forms part of lever 7. A- hub' 27 on' the side of the lever '7 carries adjustment soreW -QS bymeans' of which the motor 23' can be adjusted in said slide transverse to the lever 7. 7' There is a clearance hole 29 inthe table plane in which these saws are facing flange 21 is fixed. If more sawsare "addedonithe spindle of that motor, thewidthof the combinedsaws is extendedltowards motor 23" and v r The I to keep the corresponding width of saws on f the spindle of motor 23 in alignment With these saws on motor 17 motor 23 is accordingly adjusted in slide 25 on lever 7. Perpendicular to the axes of the two motors ex- 1 tends, across the table 4', a slot which takes i when, in the operationof the machine, the

tenon is cut at theirother end. Tapped holes 86 onangle 32 serve to take screws by which an extension maybe clampedto the face 'A single switch for the control of the current supply for both motors may be'provided in the front of the machine, and the leads are brought from there by way of the fulcrum points of the levers to the respective motors. To protect'the operator from the dangers of the high speed tools sectional or semiautomatic guards are used, as they are customarily applied in this art; 7

The electric motors may be small. and of low capacity, and a machine driven by fractional horsepower motors can handle all 7 tenoning requirements which ordinarily oc-r our.

boards and of sawing very long tenons, the- "machine lends itself to cutting in steps on a For the work on exceptionally heavy production basis, on account of the simple means of adjustment; 7

I do not want to limit the'scope of my invention to the exact design illustrated, but various other forms of execution, for instance the adjustment of the motors towards each other may be brought about by vertical slides instead of swing levers, may be adapted for a tenoiiing machine of this kind.

I claim: v 1. The combination, in a tenoning ma chine, of a table to support the work, and means slidable thereon for pushing the work laterally thereof longitudinally of the table, with parallel fulerumed levers extending longitudinally of the table and pivoted to V lugs extending above and below said table,

means for adjusting said levers toward and away from said table, a gang of saws d1- rectly driven by motors mounted on said tin levers, while the saw gangs project from the opposite sides of said levers, and an opening in said table through which said saw gangsface each other, the saw gang on the upper lever projecting from the same side thereof as the work pushing means.

2. In a tenoning machine, the combination of a table having a top to support the work, two operatively separated, I independently motor driven gangs of saws,above andbelow said table top, in vertical alignment with each other and operating in a plane vertical to said table top, and independently operable means rockably'mounted above and below 7 said table top, to adjust said gangs of saws and driving means to and from each other and said table,in a plane vertical to said. table. 1

3. In a tenoning machine, the combination of atable having-a top to support the work,

two operatively separated, independently motor driven gangs of saws, above and below said table top, in vertical alignment with each other and operating in a plane vertical to said table top, independently operable means rockably mounted above and below said table top, to adjust said gangs of saws and driving means to and from each other and said table. in a'nlaiie vertical to saidv table, and

means to adjust one of said gangs of saws' and one of said motors relatively to the other of'said of saws and theother of said motors in the direction of their axes, transversely "of said table top,

4'. In a tenoning machine, the combination of a table having atop to support'the work, twoToperatively separated, independently motor driven gangs of saws, above and below said table top in vertical alignment with each other and operatingin a plane vertical to said table top, motors directly driving said gangs of saws, mounted above and below'said tabletop near the opposite sides thereof, with their vaxes substantially parallel to the top bottom. faces of said'table top lying in -a common vertical plane substantially perpendicular to said table top, and independently operable means rockably mounted above and below said table-top, to adjust said gangs of saws and driving means to and fromeach" other and SitlClii-itbie, in a plane vertical to saidtable; V

5. In a tenoningmachine, the combination of a table-having a top to support the work,

a plurality of operatively separated, independently motor driven gangs of saws above and below said table top, in vertical alignment with each other, and operating in a plane vertical to said table top, a plurality of motors, disposed respectively above and below said table top near. opposite sides thereof, with their axes substantially parallel to the top and bottom faces of said table top lying in a common vertical plane substantially perpendicular to said table top,'directly connected to and independently driving each of said gangs'of saws, and independently 0perable means supporting said motors-rockably mounted above and below said table top near the opposite sides thereof, to adjust said gangs of saws and said motors to and from each other and said table, in a plane vertical to said table top. v V.

r 6. In a tenoning machine, the combination of'a table having a top to support the work,

a plurality of operatively separated, indcpendently motor driven gangs of saws above and below said tabletop, in vertical align ment with each other, and operating in-a plane vertical to said table top, a plurality of motors, disposed respectively above and .below said table top near opposite sides thereof,

With their axes substantially parallel to the top and bottom faces of said table top lying in a common vertical plane substantially perpendicular to said table top, directly. connected to and independently driving each of said gangs of saws, independently operable relatively to the other of said gangs of saws and the other of said motors to and fromeach other, in the direction of their axes parallel to and transversely of said table top.

7. The combination in a tenoning machine, 7

of a table having a top to support the work, and means slidable thereon for pushing the work laterally thereof longitudinally of said table top, two operatively separated, independently motor driven gangs ofsaws, above and below said table top, in vertical align ment with each other and operating in a plane vertical to said table top, motors driving said 7 gangs of saws mounted above and below said table top nearthe opposite sides thereof with their axes substantially parallel to the top and bottom faces of said table top lying in a common vertical plane substantially perpendicular to said table top, and independently operable means, roekably mounted above and below said tabletop, to adjust said gangsof saws and driving meansto and from each other and said table top, in a plane vertical to said table. Y Y

LOUIS MAASS. 

